The convoy system is the system of employing naval protection for merchants or troops. That means that the enemy who would want to damage the other side by cutting off their supplies would have to face more resistance.
This system was especially successful in the First World War, and it was said to contribute greatly to winning, as it was the German strategy to cut their enemies off from possible suplies (such as from the US).
Answer:
Andrew was impeached because the impeachedment and trial of Andrew Johnson had importent political implications for the balance of federal legislative-executive power.
Explanation:
Wind power has gain interest in the last decade because it is one of few very clean renewable energy sources. There are countries, like the US that have large open spaces with excellent winds that are favorable for building large wind parks. The only downside of this source is that wind parks take a large amount of space, and it the US those are even build on the Native American Sacred Ground. On the other hand Nuclear Power Plant, is less clean and more dangerous. Nuclear Plant does not emit any CO2 in the air, but it does have a higly toxic waste and it is potentialy dangerous if the malfunction occurs. Nuclear waste is radioactive and it is the most dangerous for humans. In the countries that have less wind power, these plants are an option, as in France for example.
Answer: He was referring to the production technologies i.e. the methods employed to extract, produce and utilize resources were man-made and far from naturally ideal.
Explanation: Barry Commoner was an American cellular biologist, professor and politician. He was a leading ecologist and among the founders of the modern environmental awareness movements.
The above excerpt is from his book, The Closing Circle published in 1971, where Commoner exposed the role of capitalism and profit as root causes of environmental degradation, at a time when majority of writers were blaming individual behaviour or overpopulation for pollution.
The immediate effect was that it divided the newly discovered land in South America along a line. With lands to the west of a line belonging to Castile and the land to the east belonging to Portugal.
